Granted Patent
Utility
US 5,178,692 · App. 07/820,165
Anisotropic neodymium-iron-boron powder with high coercivity and method for forming same
Inventor:
Viswanathan Panchanathan
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Jan 13, 1992
Inventor
Viswanathan Panchanathan
Assignee (at issue)
General Motors LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.